Inner Mongolia · China · 40.71° N · 110.29° E
Solar position in Shiguai
Sun position, daylight and the best solar panel angle for Shiguai — computed for 40.71° N, 110.29° E, 1337 m above sea level.
The sun right now
Sun in Shiguai today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:28 | sun 18° below horizon |
| Nautical dawn | 06:00 | 12° below |
| Civil dawn | 06:32 | 6° below |
| Sunrise | 07:00 | 105° ESE |
| Golden hour ends | 07:38 | sun 6° up |
| Solar noon | 12:22 | 37.2° high |
| Golden hour starts | 17:06 | sun 6° up |
| Sunset | 17:44 | 255° WSW |
| Civil dusk | 18:12 | 6° below |
| Nautical dusk | 18:44 | 12° below |
| Astronomical dusk | 19:16 | 18° below |
| Day length | 10 h 44 min | |
Sun path diagram for Shiguai
Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.
- June solstice
- Equinox
- December solstice
- Today
On the June solstice the sun reaches 72.7° at solar noon in Shiguai; on the December solstice only 25.9°. Sunrise swings from 58° ENE in June to 121° ESE in December — a 63° arc along the horizon.
Sunrise, sunset and sun height by month
Values for the 21st of each month, local clock time including daylight saving time.
| Month | Sunrise | Solar noon | Sunset | Day length | Noon elevation |
|---|---|---|---|---|---|
| January | 07:57 | 12:50 | 17:42 | 9 h 45 min | 29.4° |
| February | 07:25 | 12:52 | 18:20 | 10 h 55 min | 38.7° |
| March | 06:41 | 12:46 | 18:51 | 12 h 10 min | 49.5° |
| April | 05:51 | 12:37 | 19:24 | 13 h 32 min | 61.2° |
| May | 05:16 | 12:35 | 19:54 | 14 h 37 min | 69.5° |
| June | 05:07 | 12:40 | 20:13 | 15 h 06 min | 72.7° |
| July | 05:25 | 12:45 | 20:04 | 14 h 40 min | 69.8° |
| August | 05:54 | 12:41 | 19:28 | 13 h 34 min | 61.4° |
| September | 06:24 | 12:31 | 18:38 | 12 h 13 min | 50.0° |
| October | 06:56 | 12:23 | 17:50 | 10 h 54 min | 38.6° |
| November | 07:32 | 12:24 | 17:16 | 9 h 45 min | 29.4° |
| December | 07:59 | 12:36 | 17:14 | 9 h 15 min | 25.9° |
A year of daylight in Shiguai
Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.
Best solar panel angle in Shiguai
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
40°collects the most energy over a year: 1783 kWh per kWp.
46°gives the most in the darkest month — the one an off-grid system is sized for.
- Yearly energy
- Worst-month energy
| Tilt | kWh/kWp per year | Share of best year | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1434 | 80% | 1.91 | 3.0× |
| 15° | 1643 | 92% | 2.86 | 2.0× |
| 30° | 1760 | 99% | 3.66 | 1.6× |
| 40° year-round best | 1783 | 100% | 4.07 | 1.4× |
| 41° = latitude | 1783 | 100% | 4.11 | 1.4× |
| 45° | 1778 | 100% | 4.24 | 1.4× |
| 46° off-grid best | 1775 | 100% | 4.28 | 1.4× |
| 60° | 1696 | 95% | 4.59 | 1.6× |
| 70° | 1590 | 89% | 4.67 | 1.8× |
| 90° | 1273 | 71% | 4.48 | 2.6× |
A fixed array in Shiguai produces the most over a year at 40°. The design month for an off-grid system is December: at 46° it makes 4.28 kWh per kWp a day, 5% more than at 40°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Shiguai at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 40° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 40° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 2.52 | 5.02 | 4.74 | 4.23 | -11.9 °C |
| February snow | 3.52 | 5.73 | 5.32 | 5.03 | -7.3 °C |
| March snow | 5.01 | 6.10 | 5.51 | 5.86 | -0.1 °C |
| April | 6.17 | 5.08 | 4.45 | 5.66 | 7.7 °C |
| May | 6.85 | 4.37 | 3.72 | 5.34 | 14.6 °C |
| June | 6.56 | 3.78 | 3.14 | 4.72 | 20.3 °C |
| July | 6.22 | 3.77 | 3.10 | 4.53 | 23.0 °C |
| August | 5.70 | 4.18 | 3.47 | 4.65 | 20.8 °C |
| September | 4.83 | 4.77 | 4.07 | 4.77 | 14.5 °C |
| October | 4.00 | 5.59 | 4.94 | 5.08 | 6.3 °C |
| November snow | 2.82 | 5.73 | 5.23 | 4.68 | -2.6 °C |
| December snow | 2.24 | 4.97 | 4.67 | 4.07 | -10.6 °C |
| Year | 4.71 avg | 4.92 avg | 1590 kWh | 1783 kWh |
Sizing example. To run a 1 kWh-per-day load through July on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 380 Wp of panels at 70°, versus 290 Wp at 40°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Shiguai
Distance between rows of 2 m long panels (slope length) so that no row shades the next between 10:00 and 14:00 solar time on the winter solstice.
5.2 mrow pitch at 70°
4.6 mrow pitch at 40°
How Shiguai compares in China
Against the other 2,094 places in China with climate data, for a fixed array at its best angle.
128thof 2,095 places in China for sunshine, shared: 4.71 peak sun hours a day on flat ground.
+41%solar energy a year compared with the average place in China: 1,783 against 1,262 kWh per kWp.
+55 mindaylight on the longest day, compared with Shanghai: 15 h 06 min against 14 h 11 min.
40°best year-round tilt here; across China it runs from 14° in Haikou to 52° in Xilinji.
Of the 2,095 places in China, Nyêmo gets the most sun (5.75 peak sun hours a day) and Baima and 11 other places the least (2.91); Shiguai ranks joint 128th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 3.10 kWh a day here, against 2.06 kWh on average in China. The shortest day lasts 9 h 15 min, −52 min compared with Shanghai.
Solar forecast for Shiguai, next 48 hours
Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.
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Questions about the sun in Shiguai
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A free, live card for Shiguai: where the sun is right now on today's path, a countdown to sunset or sunrise, the daylight change, the moon phase at night and the best panel angle.
Sun positions: NREL Solar Position Algorithm. Climate: NASA POWER monthly climatology (NASA Langley Research Center). Forecast: Deutscher Wetterdienst, ICON-EU (CC BY 4.0), processed. Places: GeoNames (CC BY 4.0). Time zones: IANA. Sources and licences.